AutoGuide.com reports a study by Warranty Direct in the United Kingdom found the highest rates of engine failure among MG's, Audis and MINIs. The study did not include any products by GM, Chrysler or Ford. MG Rover topped the list for the most engine failures with a 7.88-percent failure rate. Audi was second worst with a 3.71 percent while MINI was in third with 2.51 percent.
